Hydraulic pump.



L. A. LAURSEN.

HYDRAULIC PUMP. v APPLICATION FILED JULY'lO, 1912.

Patented Feb. 25, 1913.

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[1. 5 jaw/@610 w vwwoeo L. A. LAURSEN. HYDRAULIGI PUMP.

APPLICATION FILED JULY 10, 1912.

Patented Feb. 25, 1913.

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LAURITS A. LAURSEN OF EAU CLAIRE, WISCONSIN.

HYDRAULIC Polar.

To all-whom-jtmag, concern:

Be it known that I, LAURI'IS A. LAURSEN, a citizen of the United States,residing at "Eau Claire, in the county of Eau Claire and State .ofWisconsin, have invented certain new and useful Improvements 11].Hydraulic Pumps, of which the following-is a speci} The presentinvention relates to a hydraulic pump wherein novel automatic means areemployed to alternately conduct water under pressure from a race pipe toopposite sides of a piston, which piston op: erates a plunger, which inturn suitably acts'upon a portion of the water from the race pipe sothat the same may be forced to an elevation above the source of water.-

An important object. of this invention is to provide means of the abovementioned character, which are automatic and con-v tinuousin'operation'and not liable to disarrangement'of the parts.

Other objects and advantages of this in vention will be apparent duringthe course of the following description.

For a full understanding of the presentinvention, reference isfto he hadto the following description and. the accompanying drawings, in which, a

Figure 1 is a side view of. the waste side of the pump; Fig. 2 is a sideview ofthe intake side of the same; Fig. 3 is a bottom plan view,looking fromthe line 3-3 of Fig. 1; Fig.4 is a central verticallongitudipal section through the hydraulic pump; Fig. 5 is a verticalsectional view, taken on the line 5'5 of Fig. 4; Fig. (l'i's a verticalsectional view, taken on the line 66 of Fig. 4; and F ig. 7 is a topplan view of thecasing containing the main valve structure.

Throughout the following detail descrip- .tion and on the severalfigures of the drawings, similar parts are referred to by like referencecharacters.

Referring particularly to the drai'vings, the numeral 1 designates ahorizontal bo-dy portion orcasting, Which is divided into working andpumping chambers 2 and 3,

.respectively. Rigidly' mounted in the upper side of the Working chamber2, is a main valve casing 4, upon which is rigidly Specification'ofLetters Patent. v Patented Feb 25 191 Application file'd July 10, 1912.Serial No. 708.684.

mounted an auxiliary shown.

As shown in Fig, 2, nates an intake opening, discharging into thecentral portion of the main valve casing 4. i

A suitably inclined race pipe (not shown) discharges into the intakeopening 6. An

11 disposed within the working chamber 2,

through the medium of openings 12 "and 13, respectively. The conduits 9and 10 dis-. charge at their upper ends into end chambers H and 15 ofthe auxiliary valve casing 5, through openings 16 and 17, respectively.

Mounted to reciprocate within the cylinder 11 is a piston 18, whichtravels outwardly past both 'of the openings 12 and 13. Rigidlyconnected with piston 18 is a piston rodv 19, operating through anapertured boss formed upon a partition 20, in-

terposed between the chambers 2 and 3.-

Rigidly mounted in the pumping chamber 3 and ii -spaced relationthereto, is an internal pmnping cylinder 21, having both ends open, asshown. A plunger 22 operates within the cylinder. 21 and is connectedwith the piston rod 19. Surrounding the cylinder 21 is an intermediatecylindrical shell 23, forming an annular water space 24in'freecommunication with the opcning8, before referred to. Uponitsupper side the shell 23 is provided with dpenings24,adapted to beclosedby upwardly openingcheck valves 25. The water -'dischargingthrough the openings 24' passes into chamber 3 exteriorly ofshell23,,and then passes through openings 26 which areadapt'edto be coveredby upwardly'opening'check valves 27. The Water then passes into thepressure collecting tank 28 to bedischarged through pipe '29. It. isthus seen that when the plunger 22 is moved to the left a vacuum iscreated in the chamber 3 eXteriorly of shell 23,

valve casing 5, as

the numeral 6 desig- Exterior vertical whereby water will be drawnthrough penings 24 into chamber 3, which water is rying valve heads 41,42, 43, and 44. The

valve heads 41 and 42 slide upon the seats 27 and 28, the valve head 43alternately engagesseats 29 and 31, and valve head 44 ture is shifted tothe right, so that valve head 43' engages seat 31. and valve head 44alternately engages seats 30 and 32. It is thus seen that when the mainvalve strucengages seat 30, the water supplied through opening 6 will'pas's by way. of port- 37 to the right side of piston 18, to force thesame to the left. When the main valve structure is shifted to the leftso that valve head 43.

engages seat 29 and valve head engages seat 32, the water. willv pass byport 36 to the left side of piston 18 to shift the sameto the right. w

.. Formed wlt-hin the auxiliary valve casing 5 are end annularvalveseats-45 and 46,1

formingthechambers- 14 and 15, previously referred to. Spaced annularvalve seats 47 stem -58'. o f the auxiliary valve. structure' 48,. 49,and 50.-are.also formed within the.

casing 5 each being formed of-a web of material comprising thecasing,,wliich valve seats-provide ports 51,- 52, 53,54, and 55,

as showneach port being enlarged laterally.- of the respective-seat toform an annular space aboutthe respective seat. .Theport; 55 is in freecommunication with the port 38. ,The ports 53 and 54 are infree.commu-.j nicati'on-with the ports33 and 32',Irespec-- The piston 18operates the pump in the tively, by means-of the port 56-.

. Rigidly' mountedthrough which is mounted .a reciprocatory This stemcarries spaced valve heads 59 60, 61,; and 62,. rig dly connectedtherewith.

:When-thevalve head 62 engages the valve.

seat 49, as shown in .Fig. 4,- it is obvious that-water will passupwardly through port .38, into p0rt55, port 54,.port 56,"to-'port 32",to move the main valve structure to the right, as shown in Fig. 4. When.the auxil .iaryvalve structure is shifted to the right to. bring valvehead. 62 in engagement with valve seat47, water will pass from port 55,.nto port 53, port 56, and to port 33 to. shift the main valve structureto the left.

' The annular valve seats 45 and 46are prothe'inne'r-ends of the" valveseat-s 45 and 46 are fixed heads. 57

vided with waste openings 63 and 64 at their inner ends, which dischargeinto waste conduits 65, leading into a shell 66, to be connected'with awaste pipe (not shown). It is tobe'noted that valve heads 59 and 60 onlypartially cover the waste openings. 63

and 64. -When the piston. 18 is moved to the right sufficiently to passopening 12, some of the water passes through opening 12, conduit 9,; andinto the end chamber 14, whereby the auxiliary -valve structure, in--eluding valve-head 60, will'be shifted to the 'left'to occupy the.position shown in Fig. 4.- .When the piston 18 is moved to the left tooccupy a position outwardly of theopening 13, water passes throughopening 13, conduit 10, and into chamber 15. Water is also being fedthroughconduit9 into cham- 4 her 16, but-since the waste opening ispartly open, it is obvious that the pressure in chamber 15 will be thegreater, whereby the I auxiliary valve-structure including the valvehead 59 will be shifted to the right. 'Valve head 62 will then engagevalve seat. 47

whereby the main valve structure will be shifted'to the left, asabove'stated. Whenvthis takes place water passes through port.

36 to the left side of piston 18 to move the same to the right to occupyits position I shown in Fig. 4. The orts-32 and 33 have communicatlonwit-hex aust ports '67,'leading into the chambers 14 and 15, whichports" are entirely covered by the valve heads 59* and GO when they are,in-their outermost positions.

- In the operation offthe device, water is 1 supplied at suitablepressureto ,casing 4 through opening. 6. "The watercauses thepistontomove to the left. When the piston reaches-the end of thismovement, the auxiliary valve structure will be shifted to the right,whereupon the main'valve structure will be shifted to the left,The'water will now. move the piston to the right: When the pistonreaches the end of its travel to the right the operation is againrepeated.

manner hereinbefore described.

As will be Se n'in Fig.3, the lower side of the casing which containsthe auxiliary valve structure'is provided with port open-' chamber 72,which is disposed between the said casing and the casing which containsthe main valve structure," the latter being particularly shownin Fig.7.The port 70,

communicates withrport 53, and the chamber 72. communicates with theport 73 formed in the upper portion of the casingjcontaining the mainvalve structure BI this 'm'ean's ings 70 and 71, the former opening intothe last named port being formed in the upper water that is wasted fromthe central portherein adapted to travel substantially for 'the faillength of the cylinder, of a main leading laterally from each side ofthe hi the intake side of the main valve chamber.

means when the upper valve structure is chamber communicates by meansofa port pressure vehicle to and mm the cylinder, an

which is disposed between the said two casings. The chamber 75communicateswith by which means the water exhausts through port 63,after said water has acted upon the piston (30, may pass through theports 71 and 76 so as tojoin the intake water, said portion of thecasing which contains the main valvestructure. In like manner the port77 formed in the lower side of the casing which contains the auxiliaryvalve structure, communicates with port 54, and with the chamber 78, thelatter being connected with port 32 by means of a port 79,- the latterbeing shown in Fig.7, by this forced to the right, water in port 54 willbe forced through the ports just described and said water will act uponthe left-hand end of the main valve structure to move it toward theright. -The water which has passed into'chamber 15 will, after acting onthe piston in said chamber, leave the said chalnberby means of port 80,passing into. chamber 81, whence it passes through port 82 (Fig. intochamber 83. The latter 84 with the intake side of the main valvestructure so.that the water which was in chamber 15' may j om the intakewater. The

tions' of the auxiliary valve chamber passes down through the pipes 65,shown in Fig.- 1, into the waste water chamber 66. V I In someinstances,it is found desirable operate the pump by one source of water and totake from a separate source the water to be pumped, In order toaccommodate these conditions, I have provided an opening 8, shown inFig. 4. which-when a single source of water is used, is who plugged by amember 8. and when a separate source of water is used, connection fromthe pumping chamber 3 to said source is obtained by connecting theinflow pipe in the opening 8"" and closing the opening 8; by means of ametal seat 'orotherwise. Having thus described-the invention, is claimedas new is: i r .1. In an engine of the class described, the combinationwith acylinder and a ,piston valve for controlling su ply and exhaustof,

auxiliary valve for. controlling movements of the main valve, and ahousing for said: valves, said housing having an intake portcommunicating with-both valves substan tially midway of their length,cylinder ports take port at the main valve and communi what ally withI'LSl'n'tt to each of said cylinder ports, a mam valve chamber zit-eachend of the main valve, aux1li'ar valve ports disposed laterally of theintake iit the auxiliary valve and leading therefrom tothe respectivemain valve chambers, an auxiliary valve exhaust port disposed laterallyof each auxiliary valve port adapted to communicate therewithalternately, a chamber at each end of the auxiliary valye, a portleading from each end portion of the cylinder adjacent the respectiveend to the respective auxiliary valve chamber, and an exhaust port for.each of said auxiliary valve chambers disposed to drain pressure vehicletherefrom relative to the positions of the auxiliary valve, said mainvalve being formed with valve heads adapted to alternately close thecylinder exhaustports and positioned on the valve for closing onecylinder exhaust port and at the same time affording communicationbetween the intake and the adjacent cylinder port,

and at the same time establishing communication between "the othercylinder exhaust port and the other cylinder port, said main valve beingalso formed with heads disposed-to be influenced by pressure vehicle insaid main valve chambers, the auxiliary valve being formed with headsadapted to alternately close communication between each auxiliary valveport and the respective adjacent auxiliary valve exhaust port and at thesame time to alternately} establish com 'munication between the intakeand the other auxiliary valve port, and a head ateach end of theauxiliary valve disposed in the respective auxiliaryvalve chamber andadapted to be influenced by the pressurevehicle therein. 2. In an engineofthe class described, the combination, with a cylinder and areciprocating piston-therein adapted-to travel substantially throughoutthe length of the cylinder, of a main valve for controlling supply andexhaust of pressure vehicle to and from the cylinder, an auxiliary valvefor controb ling movements of the ma n valve, and a housing for saidvalves, saidhousing having an intake port communicating with both valvessubstantially midwayof their length,

cylinder ports leading from the intake at the main valve andcommunicating with the respective ends of the cylinder, communicationbetween the intake port and the cylinder lished ,and cut off by saidmain valve, a cylports being adapted to be alternately estab-- inderexhaust port for each of said cylinder ports disposed to be alternatelyopened and closed, with respect to the cylinder ports,

', main valve chambers for the end portions of themainvalve adapted toreceive pressure vehicle'for actuating the main valve, intake and'exhaust ports for said main valve cham- ,bers,'disposed to bealternately opened and eating with the respective ends of the cylin(1813A?! cylinder exhaust port disposed-laten plosedubythe auxiliaryvalve, auxiliary valve gliambers adapted to receive. pressure vehicleports for -'sai the auxiliary valve, exhaust auxiliary valve' chambers,and

ports leading-directly from the cylinder adjacent the ends thereof tothe auxiliary valve chambers independently of the main valve, the lastmentioned ports communicating with the cylinder at points adjacent theends of the cylinder but spaced therefrom a dist'or actuatin tanoesufficient for accommodating the piston between the terminal of therespective port and the adjacent end of the cylinder.

' therein adapted to reciprocatesubstantially- 3. In an engine of theclass described, the combination with a cylinder and a piston throughoutthe length of the cylinder, of a main valve controlling supply andexhaust of pressure vehicle to and from the cylinder, an auxiliary valvefor controlling move ments of the main valve, and a housing for saidvalves, said housing having an intake port communicating with bothvalves, cylinder ports'leading laterally from e'achside of the intakeport at the main valve and communicating with the respective ends of thecylinder, a cylinder exhaust port dis-- posed laterally with respectto'each cylinder port, valve seats between the cylinder ex- 'haust portsand the respectivecylinder ports and between the intake andtherespective cylinder ports, formed of a Web of the material of thehousing and each cylinder port and cylinder exhaust port being enlargedto form an annular space; about and extending laterally chamberat'each'end of the/main va'lve,-auxternately, valve of a web iliaryvalve exhaust port being enlarged toform an annular space about andextending laterally of its respective valve'seat, a chamber. at each endof the auxiliary valve, a port leading. from each end portion of thecylin der to therespective auxiliary valve chamber, and'an exhaustportfor each of said auxiliary valve chambers disposed to drain pressurevehicle therefrom relative to the positions of the auxiliary valve, saidmain valve being formed with valve heads adapt ed to alternately closethe, cylinder: exhaust orts and posit1oned' on thevalve for closingonecylinder exhaust "port and at the same time afiording communicationbetween the intake and the adjacent cylinder port,

of the intake. each of said seats beingof itsjr'espective valve 'seat, amain valve and at the" same time to establish communication between theother cylinder exhaust port and-the other cylinder port,'said main valvebeing also formed with heads disposed to be influenced by pressurevehicle in said main valve chambers, the auxiliary valve beingformed'with heads adapted to alternately close communicati'on betweeneach auxiliary valve port and the respective adjacent auxiliary valveexhaust port and at the same time to alternately establish communicationbetween the intake and the other auxiliary valve port, and a head ateach end of the auxiliary valve disposed in the respective auxiliaryvalve chamber and adapted to be influenced by the pressure vehicletherein.

4; In-anengine of the class described, the combination,with a cylinderand a piston therein adapted to travel" substantially throughout thelength of the cylinder, of a main valve for controlling supply andexhaust of pressure vehicle to-andfrom thecylinder,-an auxiliary valvefor controlling -movements of the main valve, and a housing for saidvalves, said housing-having an intake port communicating with bothvalves substantially midway of their length, cylinder ports-leadinglaterally from each side port at the main valve and communicating withthe respective ends of the cylinder, a cylinder exhaust port disposedlaterally with respect \to each of said cylinder ports, a-main valvechamber at each end of the main valve, auxiliary valve ports disposedlaterall of the intake at the auxiliary valve and 'eading therefrom tothe respective main valve chamber, an au'xiliary valve exhaust'portdispo'sed laterally of each auxiliary valve port adapted tocommunicate therewith alternately, a chamber at each end of theauxiliaryvalve, a port leadin from each end portion of the cyllnder, ajacent the respective end, to the respective auxiliary valve chamberindependently of the main valve, and an exhaust port for each of saidauxiliary valve chambers disposed to drain pressure vehicle therefromrelative to the positions of' the auxiliary valve, each of saidauxiliary valve chamber exhaust ports being located relative to therespective end'of the auxiliary valve for bleeding presslirevehicle1from within the auxiliary valve chamber f or efiecting startingof the return valve, said main valve being formed wit valve' headsadapted to alternately close the cylinder exhaustportand at theisa'metime affording communication between the intake'and thead'acent'cylinder port, and at the same. time establishing communication,betweenthe other cylinder exhaust-port and the other cylinder l i ving-also formed ,w1th1heads disp'osedto be 1 port, said mam valvebeu'enced' by pressure which infsaid main thrustfof the auxiliaivalvechambers, .the. auxiliary; valve "being formed with heads adaptedto alternately iary' valvechamber and adapted to be inclosecommunication between each auxlliary fluenced by the pressure vehicletherein. 10

valve port and the respective adjacent auxil- In testimony whereof Iaffix mysignature iary valve exhaust port and at the same time inpresence of two witnesses. x to alternately establish communication be-LAURITS A. LAURSEN. tween the intake and the other auxiliary Witnesses:valve port, and a head at each end of the aux- ANNA E. SINDELL, iliaryvalve disposed in the respective auxil WV. J. EBERIVEIN.

copies of this P t may be obtained iorfive cents each, by addressingthe' Commissioner of Patents,-

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